213939121272830 has 64 divisors (see below), whose sum is σ = 389283935040000. Its totient is φ = 84649065240960.

The previous prime is 213939121272829. The next prime is 213939121272847. The reversal of 213939121272830 is 38272121939312.

It is a super-2 number, since 2×213939121272830² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1188176789 + ... + 1188356831.

It is an arithmetic number, because the mean of its divisors is an integer number (6082561485000).

Almost surely, 2^{213939121272830} is an apocalyptic number.

213939121272830 is a deficient number, since it is larger than the sum of its proper divisors (175344813767170).

213939121272830 is a wasteful number, since it uses less digits than its factorization.

213939121272830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183729.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 213939121272830 in words is "two hundred thirteen trillion, nine hundred thirty-nine billion, one hundred twenty-one million, two hundred seventy-two thousand, eight hundred thirty".